Let's roll up our sleeves and solve this. We have 872 and we're going to multiply it by 137, essentially adding 872 to itself 137 times.
Step 1: 0 + 872 = 872
Step 2: 872 + 872 = 1744
Step 3: 1744 + 872 = 2616
Step 4: 2616 + 872 = 3488
Step 5: 3488 + 872 = 4360
Step 6: 4360 + 872 = 5232
Step 7: 5232 + 872 = 6104
Step 8: 6104 + 872 = 6976
Step 9: 6976 + 872 = 7848
Step 10: 7848 + 872 = 8720
Step 11: 8720 + 872 = 9592
Step 12: 9592 + 872 = 10464
Step 13: 10464 + 872 = 11336
Step 14: 11336 + 872 = 12208
Step 15: 12208 + 872 = 13080
Step 16: 13080 + 872 = 13952
Step 17: 13952 + 872 = 14824
Step 18: 14824 + 872 = 15696
Step 19: 15696 + 872 = 16568
Step 20: 16568 + 872 = 17440
Step 21: 17440 + 872 = 18312
Step 22: 18312 + 872 = 19184
Step 23: 19184 + 872 = 20056
Step 24: 20056 + 872 = 20928
Step 25: 20928 + 872 = 21800
Step 26: 21800 + 872 = 22672
Step 27: 22672 + 872 = 23544
Step 28: 23544 + 872 = 24416
Step 29: 24416 + 872 = 25288
Step 30: 25288 + 872 = 26160
Step 31: 26160 + 872 = 27032
Step 32: 27032 + 872 = 27904
Step 33: 27904 + 872 = 28776
Step 34: 28776 + 872 = 29648
Step 35: 29648 + 872 = 30520
Step 36: 30520 + 872 = 31392
Step 37: 31392 + 872 = 32264
Step 38: 32264 + 872 = 33136
Step 39: 33136 + 872 = 34008
Step 40: 34008 + 872 = 34880
Step 41: 34880 + 872 = 35752
Step 42: 35752 + 872 = 36624
Step 43: 36624 + 872 = 37496
Step 44: 37496 + 872 = 38368
Step 45: 38368 + 872 = 39240
Step 46: 39240 + 872 = 40112
Step 47: 40112 + 872 = 40984
Step 48: 40984 + 872 = 41856
Step 49: 41856 + 872 = 42728
Step 50: 42728 + 872 = 43600
Step 51: 43600 + 872 = 44472
Step 52: 44472 + 872 = 45344
Step 53: 45344 + 872 = 46216
Step 54: 46216 + 872 = 47088
Step 55: 47088 + 872 = 47960
Step 56: 47960 + 872 = 48832
Step 57: 48832 + 872 = 49704
Step 58: 49704 + 872 = 50576
Step 59: 50576 + 872 = 51448
Step 60: 51448 + 872 = 52320
Step 61: 52320 + 872 = 53192
Step 62: 53192 + 872 = 54064
Step 63: 54064 + 872 = 54936
Step 64: 54936 + 872 = 55808
Step 65: 55808 + 872 = 56680
Step 66: 56680 + 872 = 57552
Step 67: 57552 + 872 = 58424
Step 68: 58424 + 872 = 59296
Step 69: 59296 + 872 = 60168
Step 70: 60168 + 872 = 61040
Step 71: 61040 + 872 = 61912
Step 72: 61912 + 872 = 62784
Step 73: 62784 + 872 = 63656
Step 74: 63656 + 872 = 64528
Step 75: 64528 + 872 = 65400
Step 76: 65400 + 872 = 66272
Step 77: 66272 + 872 = 67144
Step 78: 67144 + 872 = 68016
Step 79: 68016 + 872 = 68888
Step 80: 68888 + 872 = 69760
Step 81: 69760 + 872 = 70632
Step 82: 70632 + 872 = 71504
Step 83: 71504 + 872 = 72376
Step 84: 72376 + 872 = 73248
Step 85: 73248 + 872 = 74120
Step 86: 74120 + 872 = 74992
Step 87: 74992 + 872 = 75864
Step 88: 75864 + 872 = 76736
Step 89: 76736 + 872 = 77608
Step 90: 77608 + 872 = 78480
Step 91: 78480 + 872 = 79352
Step 92: 79352 + 872 = 80224
Step 93: 80224 + 872 = 81096
Step 94: 81096 + 872 = 81968
Step 95: 81968 + 872 = 82840
Step 96: 82840 + 872 = 83712
Step 97: 83712 + 872 = 84584
Step 98: 84584 + 872 = 85456
Step 99: 85456 + 872 = 86328
Step 100: 86328 + 872 = 87200
Step 101: 87200 + 872 = 88072
Step 102: 88072 + 872 = 88944
Step 103: 88944 + 872 = 89816
Step 104: 89816 + 872 = 90688
Step 105: 90688 + 872 = 91560
Step 106: 91560 + 872 = 92432
Step 107: 92432 + 872 = 93304
Step 108: 93304 + 872 = 94176
Step 109: 94176 + 872 = 95048
Step 110: 95048 + 872 = 95920
Step 111: 95920 + 872 = 96792
Step 112: 96792 + 872 = 97664
Step 113: 97664 + 872 = 98536
Step 114: 98536 + 872 = 99408
Step 115: 99408 + 872 = 100280
Step 116: 100280 + 872 = 101152
Step 117: 101152 + 872 = 102024
Step 118: 102024 + 872 = 102896
Step 119: 102896 + 872 = 103768
Step 120: 103768 + 872 = 104640
Step 121: 104640 + 872 = 105512
Step 122: 105512 + 872 = 106384
Step 123: 106384 + 872 = 107256
Step 124: 107256 + 872 = 108128
Step 125: 108128 + 872 = 109000
Step 126: 109000 + 872 = 109872
Step 127: 109872 + 872 = 110744
Step 128: 110744 + 872 = 111616
Step 129: 111616 + 872 = 112488
Step 130: 112488 + 872 = 113360
Step 131: 113360 + 872 = 114232
Step 132: 114232 + 872 = 115104
Step 133: 115104 + 872 = 115976
Step 134: 115976 + 872 = 116848
Step 135: 116848 + 872 = 117720
Step 136: 117720 + 872 = 118592
Step 137: 118592 + 872 = 119464

So, 872*137 = 119464